Unloading-plow.



PATENTED DEC. 4, 1906.

S. L. G. KNOX.

UNLUADING PLOW.

APPLICATION FILED APR.11.1906.

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PATENTED DEC. 4, 1906.

S. L. G. KNOX. UNLOADING PLOW. APPLICATION FILED APR.11.1906.

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UNITED sTAr is PATENT OFFICE.

SAMUEL LIPPINCOTT GRISWOLD KNOX, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO THE BUCYRUS COMPANY, OF SOUTH MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

UNLOADlNG-PLOW- Specification of Letters Patent.

Patented Dec. 4, 1906.

Application filed April 11, 1906. Serial No. 311,107.

To all whom it may concern.-

Be it known that I, SAMUEL LIPPINCOTT GRISWOLD KNOX, a citizen of the United States, residing in the city and county of Milwaukee, State of Wisconsin, have invented certain new and useful Improvements in Unloading-Plows and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to certain new and useful improvements in unloadingplows described in my prior application, filed April 24, 1905, Serial No. 257,163.

Broadly considered, the invention consists in providing an unloading-plow used to scrape earth, rock ballast, or other spoil from the surfaces of flatcars or other platforms and deposit the same laterally of the cars or platforms with means for crushing or breaking up the spoil as the same is being operated upon by the plow.

A convenient embodiment of the invention comprises a plow having a scoop portion provided with rearwardly-converging sides which terminate in a lateral discharge-opening, adjacent which opening is located the crushing mechanism, which may conveniently comprise a pair of crushing-rolls, the apparatus being provided with means for driving the rolls, which means are preferably instrumental in operating the plow also.

It is common practice in loading a train of platform-cars or like transporting apparatus to deliver the spoil thereto in relatively large lumps or pieces, which when discharged upon the right of way or other dump must in many instances be broken up by hand in order to cause the spoil to pack tightly to form a proper foundation.

One object of the present invention is to avoid the necessity of breaking up the spoil after the same has been scraped from the platform-cars by causing the spoil to pass through a crushing apparatus during the unloading operation. This mode of procedure presents great economical advantage, not only in connection with unloading-plows dis charging directly from the platform-cars upon the right of way but is particularly well adapted for use in connection with conveyer systems such as that described and claimed in my application hereinbefore referred to. In addition to the particular uses to which this unloading-plow may be put, as hereinbefore described, it may obviously find effective application in simultaneously discharging and breaking up various materials that are shipped in bulk and are required to be crushed or broken up pre aratory to use.

In" the accompanying awings, Figure 1 represents in plan view a conveyer system embodying the invention. Fig. 1 is afragmentary plan view showing a modified form of driving-drums. Fig. 2 is a view similar to that illustrated in Fig. 1, showing a modified form of apparatus for operating the unloading-plow and the crushing apparatus carried thereby.

Referring to the drawings, A indicates a train of platform-cars upon which the spoil or other material is loaded and from which the same is ada ted to be discharged at the desired point y means of the unloading-plow. The unloading-plow, which forms the basis of the present invention, may conveniently consist of a framework a, which is adapted to be drawn backward and forward over the u per surface of the cars and to accomplish t e necessary reciprocation in the most eflective manner may be provided with any of the well-known mountings for unloading-plows. Mounted upon the framework 0 is the shovel or scoop proper, which consists of the bottom plate I), which at its forward end extends from side to side of the car and lies in close proximity to the upper surface of the platform-car, so as to slide under the material loaded thereon, and two sides 0 and d, which converge rearWa-rdly and terminate in a discharge-opening e, which is provided with a lip formed by the end of the bottom b to deliver the unloaded material laterally of the cars. A convenient arrangement of the sides 0 and d is that illustrated, inwhich the side cl is generally parallel with the direction of motion of the plow and side a is inclined across the'direction of motion toward the side (if, so as to constitute, in effect, a moldtoward the lateral discharge-opening.

I00 board for turning and guiding the material Located in the path of movement of the material passing over the plow in the discharging operation is a crushing apparatus through which substantially all of the discharged material must pass before the same leaves the plowj This crushing apparatus may take any convenient form, but, as illustrated, consists of a pair of crushing-rolls f and g, mounted for rotation upon vertical axes, substantially in the discharge-opening and just in advance of the lip, over which the crushed material is finally delivered. The rolls f and 9 may be driven by any appropriate means, and in the particular embodiment of the invention illustrated in Fig. 1 this means consists of a pair of meshing-gears 1' and j, mounted upon the. axes of the respective rolls f andg, and a pinion h, mounted on the axis of the outer roll f and meshing with a series of rack-teeth mounted on the sides of the car-bodies, all so arranged that when the plow is advanced during the unloading operation pinion h, engaging the rack Z, will rotate the roll f in a clockwise direction, which, through the intermediacy of gears i and y', will rotate roll gin an anticlockwise direction, thereby forcing the material between the rolls and breaking up the lumps or large masses thereof into bits of the desired size. It will be noted that as the plow advances the material passes rearwardly over and through the same in such a way that substantially all of said material must pass between the rolls, so that all of the lumps that are larger than the size desired will be effectively broken up before ultimate discharge from the plow.

As illustrated in Fig. 1, the plow is alternately advanced and retracted over the upper surface of the train of cars by means of the endless cable m, which runs over the entire train of cars and is operated by the twin drums Q) Q), driven by a reversible engine y, preferably mounted on the forward platformcar. The drum '1), which is driven from the engine, is the operative element and is provided with a series of circumferential grooves to receive several turns of the endless cable m, which cable also takes a number of turns about the drum 0, which is provided with circumferential grooves to receive the cable and which serves as a stretching or tightening member or sheave to produce suflicient friction on the driving-drum o to prevent the cable slipping.

In Fig. 1 a generally similar arrangement is shown, differing from that in Fig. 1 only in that both drums '0 and '2) are geared to the engine and positively driven in both directions.

Another convenient embodiment of the in vention is illustrated in Fig. 2, which difiers from that hereinbefore described in the means for operating the crushing-rolls and also for operating the plow. In this modification the rolls f and g are driven from a motor m, of any preferred type, mounted directly upon the framework a of the plow, said motor being provided with a bevel-gear l, which meshes with a bevel pinion h on the axis of roll 9, and as the respective rolls are provided with the intermeshing gears i and j it will be seen that as motor m is operated the rolls will be rotated in a proper direction to crush the material and feed the same forward to the discharge-opening. The motor m may also be employed .to operate the plow in its unloading action and to withdraw the same to the rear end of the train after the series of cars have been unloaded and preparatory to a reloading of the cars. To accomplish this, the motor m is connected by gearing n, whichdrives a pocket-wheel or chainwheel 0, over which a cable or chain p passes, the latter being secured at opposite ends of the train and guided in its passage over wheel 0 by idler-wheels 0 0-". It will be seen that when the motor is started in a forward direction the pocket-wheel or chain-wheel 0 engaging the chain will cause the plow to advance, and simultaneously the operation of said motor on will drive the rolls f and g to effect the crushing operation. By reversing the direction of the engine the chain-wheel 0" will retract the plow along the surface of the cars, and, if it be found necessary or de-v sirable to prevent the rolls being driven during this operation, suitable clutch mechan: ism may be interposed between the engine and the rolls, to throw the latter out of com? mission.

What I claim is 1. An unloading plow, provided with means for crushing or breaking the material during the operation of unloading.

2. An unloading-plow, provided with a roll for crushing the material operated upon.

3. An unloading-plow, provided with cooperating crushing-rolls, through which the material is passed during the operation of unloading.

4. An unloadingeplow, comprising a scoop portion having rearwardly-converging sides terminating in a lateral discharge-opening, and crushing apparatus adjacent to said discharge-opening.

5. An unloading-plow, comprising a scoop portion having rearwardly-converging sides terminating in a lateral dischargeeopening, and crushingerolls located near the said discharge-opening.

6. An unloading-plow, comprising ascoop portion having rearwardly-converging sides terminating in a lateral discharge-opening, crushing-rolls located near said dischargeopening, and means for driving said rolls as the plow advances.

7. An unloading-plow, comprising a scoop portion having rearwardly-converging sides, terminating in a lateral discharge-opening,

crushing-rolls located near said dischargeopening, and a motor on the plow for driving said plow and said crushing-rolls.

8. A11 unloading-plow, comprising a scoop portion having rearwardly-converging sides terminating in a lateral discharge-opening, crushing apparatus located approximately in said discharge-opening, and a motor on the plow for driving said plow and the crushing apparatus.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL LIPIINCOTT GRISWOLD KNOX. Witnesses:

H. B. HAYDEN, W. H. SCHLEOK. 

